Oil-gas generator and burner.



G. DRUMMOND.

01L GAS GENERATOR AND BURNER. APPLIOATION FILED JUNE 1, 1909.

Patented May 24, 1910.

iron i a @lr itfilltnmo GEORGE DRUMMOND, DE LOS ANGELES, CALIFORNIA.

OIL-GAS GENERATOR AND BURNER.

iS pecification 01 Letters Patent.

Patented May fit, Elwin.

Application filed June it, 1909. Serial No. 499,587.

To all whom it may concern:

Be it known that l, Gnonon DaUMMonn citizen of the United Statemiresiding at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful (til-Gas Generator and Burner, of which the tollowingis a specification.

This invention relates to the class of oil burning appliances wherein a retort pro vided for generating the oil into gas. the gas being produced under pressure and be ing mixed with air in a mixing chamber preliminary to its combustion.

The main object ot the presentinvention is to provide a burner of this character of simple and compact construction and efficient and economical in operation.

A further object of the invention is to provide a burner in which the several parts can be conveniently cleaned out wh lll required.

Other objects and advantages of the in vention wil appear hereinafter:

Referring to the drawings: l igure l is a side elevation. partly broken away, of a stove provided with the oil-gas generator and burner constituting the present invention. Fig. 2 is a plan oi" the device. Fig. 2-3 is a longitudinal section on line f -(I' in Fig. 2. Fig. 4 is a transverse section on line .tr r in Fig. 3. Fig. is a front end elevation of the burner.

The apparatus comprises a retort and a combined mixing and burner chamber connected thereto. The retort consists of tuba lar or pipe members connected to 't orin a. U-shaped tubular structure comprising; two horizontal parallel arms or members 1 i2 and a cross tube 3 connectin; said members at one end. Cross tube 3 is connected to tubular members l, 2 by tour-way fittings -1 having screw plugs The oil inlet pipe 7 is ('onncctcd to the inlet end of the tube 1 and a valve 8 is provided for this oil supply connection. T] c delivery end of the other tubular member or arm 3 is connected to the gas valve 10 whose outlet ll is formed as a nozzle extending within the mixing chamber. The connections of the inlet and outlet tu es are made by ten provided with screw plug 2'1, and by i'our'way tilting; 2! having a screw plug 35.

The mixing chamber cons sts of a tubular body 13 extending longitiulinally between the arms or members 1, 2 and provided at its rear end with a downward extension '12,

into which the gas nozzle 11 optns, there being an air inletopening around the nozzlc. Directly in trout of the inlet of the mixing chamber this downward extension is provided with a depression or cup portion 1-1;. The, tubular body of the mixing chamber is closed at each end and at the terard end it notched as at 15 to receive the cross tube ot the retort. The two arms o the retort preferably hug or closely embrace the body 13 of the mixing and burner chan'ibcr. said body being); preferably formed at circular shape with the retort arms restingagainst the upper inclined walls thereof and on projecting portions or shoulders 1.5 atthe respective sides of said body. The lower inclined alls 16 of the mixing and burner chan'iber are preferably pcrtin'ated by transverse slits or slots 17 beneath the retort members 1, 2, so that. the gas may issue laterally therethrough. her may rest on a suitable drip pan or other suitable support 18 by means of legs 19 extending from the rtmrward portion of the body. The front portion of the retort has a groove or channel 27 in its floor. said channel inclining thnvnwardlv toward the front.

ltlcans are provided for relieving any condition o1 excess pressure in the retort, said means consisting of a relief? valve or safety valve 3 controlled by a spring; having an adjusting screw 25, the outlet o. lief valve communicating by a pipe Qt with the enlargement 12 of the mixing chamber. so that when any condition oi excess pressure is developed in the ;I(Ht1'2it()1 or retort; the excess of gas will pass through this relief valve and pipe it? to the mixing chainher and thence to the burner outlets where it will be consumed.

l have found it practicable with sucha burner to generate a considerably greater quantity of comluistible gas than is quired for the operation of the burner. In order to utilize this excess gas for other purposes a pipe or conduit 28 may be connected to the top of the mixing chamber 13,.said pipe leading to any location wlcrc a burner is (tOSllCCl The burner may be applied to an ordinary stove as show. in Fig. l. where 30 indicates a stove 31 the fire pot. thereof and 32 the front. The drip pan 18 is placed on the usual grate 33 of the. stove, so as to act as a closure for the bottom of the fire potv and cause the air draft through the stove to pass The mixing chain- Ill,

through the air inlet 22 around the gas inlet 11. The supplementary gas delivery pipe 28 may extend to the outside of the stove and then to any suitable burner or burners indicated at 35.

The operation is as follows: When the oil is first turned on it fills the retort and a portion flows out through the gas nozzle 11 into the cup or depression 14 and owing to the velocity of'the oil, a portion thereof will be projected onto the farther portion of the floor of the mixing chamber and will accumulate in the groove 27, which, being forwardly inclined, will convey the oil, in part, to the forward end of the mixing chamber. The oil being then lighted by the match applied through the air inlet it burns within the mixing chamber and gradually warms the same and the retort, so that eventually the fuel will be discharged from the nozzle 11 in the form of gas at a high velocity, the flame within the mixing chamber being then extinguished. The velocity of this gas, together with the natural draft from the stove, causes air to be drawn in through the air inlet 22 and said air is mixed with the gas within the chamber 13 and the mixture issues through the slots 17 of the chamber 13 and burns in transverse flames which extend directly under the members 1, 2 of the retort. so that the retort is subjected to the direct heat of the flame. The retort being supported by the ledges or shoulders 15 of the ody 13, it is not liable to become warped or to sag by reason of the intense heat applied thereto. The screw plugs 5, 21, 36 are in line with the longitudinal and cross tubes 1, 2, 3, so that by removing these plugs, the tubes are exposed from end to end, for inspection br cleaning, and can be cleaned by pushing a bar therethrough.

What I claim is:

1. An oil-gas generator and burner com prising a retort formed with two horizontal tubular members, a cross tube connecting said members at one end, an oil inlet connection to the other end of one of said members, an outlet connection to the corresponding end of the other of said members, and a mixing chamber connected to said outlet connection and extending longitudinally between said members and having outlet slots at each side thereof beneath the retort members, said mixing chamber being formed as a tubular member having a downward enlargement at one end, and havii'ig an air inlet opening in said enlargement, the outlet connection from the retort opening into said inlet.

2. An oil-gas generator and burner comprising a tubular mixing chamber formed with a projecting portion along each side and a retort formed of two longitudinal members extending alongside the mixing chamber and resting on said projecting portion at each side, and a cross tube connecting said members.

3. An oil-gas generator-"and burner comprising a retort formed with two longitudi- .nal tubular members, a cross tube connectmg said members at one end, an oil inlet connection to the other end of one of said members, an outlet connection to the corresponding end of the other of said members, a mixing chamber connected to said outlet connection and extending longitudinally between said members and having outlet slots at each side thereof beneath the retort members, said mixing chamber being grooved at each side, and the longitudinal tubular members of the retort resting in said grooves of the mixing chamber.

1. An oil-gas generator and burner comprising a retort, an oil supply-connection to said retort, an outlet connection from the retort provided with a manually operated valve, a mixing chamber communicating with the outlet connection to the retort and having an air inlet and provided with out let means, and a connection extending from the retort to the mixing chamber and provided with a relief valve opening under definite pressure.

5. In an oil-gas generator and burner, a retort comprising two longitudinal members, a cross tube connecting said members at one end, four-way fittings at the junction of the cross tube with each longitudinal me1nber,.removable plugs in said four-way fittings in line with the cross tube and with the longitudinal members, a tee-fitting at the other end of one of said tubular members, a removable plug in said tee-fitting in line with said longitudinal member, a valved inlet connection communicating with the other arm of the tee-fitting, a four-way fitting at the corresponding end of the other tubular member, a removable plug therein in line with the said other tubular member, a relief valve communicating with another arm of the last named four-Way fitting, an outlet pipe from said relief valve, a mixing chamber communicating with said outlet pipe and having outlet means, and air inlet means, a valved outlet connected withthe other opening of the four-way fitting, and a nozzle connected with said outlet means and extending in position to direct the gas therefrom into the air inlet of the mixing chamber.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 26th day of May 1909.

GEORGE DRUMMOND. 

